Anish Kapoor and friends perform Gangnam Style for Ai Weiwei - video

Anish Kapoor performs a mass Gangnam Style video in support of Ai Weiwei, the Chinese artist and dissident whose
parody of Psy's viral video was banned in China. Among the 250 people taking part in the video are artists Mark Wallinger, Bob and Roberta Smith and Tom Phillips, and figures from the arts establishment such as ICA chair Alison Myners, the artistic director of the English National Ballet Tamara Rojo, and the Guardian's art critic Adrian Searle